Estimate your baby length-for-age percentile using the World Health Organization child growth standards for infants from birth to 24 months. Length, measured lying down for babies under two, is one of the clearest signals of long term growth, and the percentile shows how your child compares with a healthy reference group of the same age and sex. A percentile near 50 is exactly average, while anything from about the 3rd to the 97th can be perfectly healthy depending on family stature and the overall growth trend. This tool interpolates the WHO LMS parameters to convert a measurement into a z score and then a percentile. Enter the age in months, the sex, and the length in centimeters or inches to see the result instantly. Everything runs locally in your browser, and this is general information, not medical advice. Your pediatrician tracks the full growth curve at each visit.
Estimate your baby length-for-age percentile using the World Health Organization child growth standards for infants from birth to 24 months. Length, measured lying down for babies under two, is one of the clearest signals of long term growth, and the percentile shows how your child compares with a healthy reference group of the same age and sex.
Yes. Baby Height Percentile Calculator is completely free, with no sign-up and no usage limits.
Yes. Baby Height Percentile Calculator runs in any modern web browser. There is nothing to download or install.
Yes. Baby Height Percentile Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.